Optimising the perioperative patient

The Oxygen Reserve Index: A new paradigm in monitoring oxygenation

A Perel

Notes/Discussions

The oxygen reserve index (ORI) is a new development in multiple wavelength pulse oximetry that reflects, in real-time and non-invasively, the oxygenation status in the moderate hyperoxic range in patients receiving supplemental oxygen.

ORI may provide an early warning when arterial oxygenation deteriorates before any changes in SpO2 occur.